Green was discussing the Ibrox side's potential involvement in a European League, which he believes will be formed in the future because "big teams can't keep subsidising small teams".
He was also quoted as saying: "How can Manchester United's revenues be £320m and Aston Villa, who are completely useless, get £250m?"
A statement from Rangers read: "Rangers chief executive Charles Green has apologised to Aston Villa following a press briefing last week in which he referred to the Midlands club.
"Mr Green has sent an apology to Aston Villa saying there had been no intention to cause offence."
Bayern Munich are kings of Germany and hope to be crowned kings of Europe at Wembley later this month!
adidas has added some color to the Predator line with this new colorway. Released on May 17. Be the first to own a pair.
The Juventus jersey for the 2013/14 was released earlier this week. Be the first to wear the colors of the Old Lady.
Ajax has released their away soccer jersey for the 2013/14 season. Get in the Gear.
The adidas Nitrocharge is the most talked about new cleat in years. It was released on May 15 and will take your pitch by storm.
The Liverpool 2013/14 soccer jersey is available for pre-order. The Reds are eager to compete for silver next season.
Chelsea won the Europa League on Wednesday. The Blues defeated Benfica 2-1 on injury time goal from Ivanovic.
Borussia Dortmund hears Wembley Calling and are headed to London for the Champions League final.
The push for more color on their cleats, adidas has added the infrared colorway to the adiZero f50 Line.
One of the top soccer cleats for control the Nike CTR360 will not let you down on the field in tight spaces.